Tubing bleeder and jar



r Dec. 1938. w, STIGALL TUBIN'G BLEEDER AND JAR Filed Feb. 26, 1937 2 Shets-Sheet 1 W /f J'J/ Aitomeys Dec. 6, 1938. w. H. STIGALL TUBING BLEEDER AND JAR Filed Feb. 26, 1937 2 Sheets-Sheet 2 By iMac/fis".

A itorneys Patentecl Dec. 6, 1938 i 2,139,3ie

UNITED STATES PATENT OFFICE 2,139319 TUBING BLEEDER AND .mn i

William H. Stigall, Taft, Calif. Application'February 26, 1937, Serial No. zaooe 2 Claims.

This invention appertains to new and useful improvements in tubing bleeders and jars.

The principal object of the present invention is to provide a device which will eliminate the pulling of wet tubing strings because of the positive action of the bleeder.

Another important object of the invention is to provide a combination device involving a jar mechanism adapted to free the pump mecha- 3 nism or other parts in the event of sanding up of the well.

Other important objects and advantages of the invention will become apparent to the reader of the following specification.

In the drawings:-

Figure 1 represents a side elevational View of the apparatus.

Figure 2 is a fragmentary longitudinal sectional View of the structure.

Figure Za is a fragmentary side elevational View of the lower portion of the'mechanism with parts in section.

Figure 3 is a cross section on the line 3-3 of Figure 1.

Figure 4 is a fragmentary longitudinal sectional View through the locking device and jar.

Referring to the drawings wherein like numerals designate like parts, it can be seen in Figure 1 that numeral 5 represents an upper 'socket structure having the tubing connecting nipple extension 6 for connection of an upper section of Well tubing, not shown, thereto.

The numeral 'l designates an inner elongated barrel smaller in diameter than socket 5 and 4 having its upper portion extended into said socket 5, said barrel 'I having an upper enlarged head 8 spaced slightly from the inner wall of the socket, the head 8 having a beveled under edge 8' for a purpose presently seen.

A short outer barrel designated by reference character 9 surrounds the upper end of the inner barrel 1, in slightly spaced sliding relation thereto and is provided at its lower end with the pair of diametrically opposite and laterally projecting lugs IO-Il said barrel 9 being rotatable relative to barrel 1. At its upper end the outer barrel 9 is provided with an enlarged head 9' internally beveled as at 9" to seat against the beveled under edge 8' of head 8. A sleeve !2 surrounding the inner barrel 7 below the barrel 9 and is provided with a pair of lcngitudinally extending slots l3 the sleeve lZ being adopted for telescoping of the lower end of the barrel 9 therein and the slots I 3 to loosely receive the lugs Ifl and li. A pair of diametrically opposite stop lugs one of which is shown at I 3' extend upwardly from the upper endrof the sleeve |2 at one edge of each slot |3 respectively. A suitable jamb nut I4 of the wedging 'type is` interposed between .the lower end of the socket structure 5 and the barrel` 9, below the head 9' to secure the socket 5 to said barrel. The lower end of the sleeve |2 is externally threaded for attachment thereto of the internally threaded downwardly tapering ring !5 against which the ribbed anchoring slips IE are slidable, these slips being carried bythe upper ends of the spring arms I'l, which spring arms are secured at their lower ends as at IS to' the collar a slidable on the lower endl of. the inner barrel T. A stop nut is provided on the barrel? under the lower end of the sleeve 12 and a spring ZI is provided on the barrel 'I between the said nut 20 and the collar I8. The collar |.8 carries the depending hook member 2'2 whichis engageable under the lateral pin 23 on thevbarrel 1.

A col'1ar2f4 is provided on the lower end portion of the inner barrel .1 and between the collars !B and 24 are the bowed spring members 25 which serve to prevent rotation of the collars !8 and 24 andslips IS in the well tubing (not shown).

Referring now to the use and operation of the invention, the described apparatus is lowered into the well casing, not shown, with the lower tubingrsection attached to the lower end of the inner barrel 'I and the upper tubing section attached to the nipple S and with the outer barrel 9 extended out of the upper end of the sleeve |2 with its lower end engaging said upper end of the barrel 9 and rotated relative thereto in a direction to engage the lugs II) and l I thereof with the lugs IS' of said outer barrel 9, such engagement of thelugs ID and ll with lugs !3' establishing the limits of rotation in that direction of said inner barrel 9. In the extended position of the outer barrel 9 the beveled end 9 'of the same and the beveled under edge 8' of head 8 seat one against the other, as shown in Fig. 2, whereby the tube line is open through 'the nipple 6 and inner barrel 1 only. Also preparatory to lowering the apparatus the collar se together with parts attached thereto are turned to the right as viewed in Fig. 1 to locate the hook member 22 under the pin 33 so that the ring l5 cannot be forced downwardly relative to the slips l6 sufficiently to spread the latter outwardly against the casing of the well. As the apparatus is lowered into position the springs 25 grip the wall of the well casing, not shown, in the usual manner to center the lower section of well tubing therein as is usual. When the apparatus is lowered sufliciently the upper section of well tubing is lifted slightly to thereby lift the socket and the outer barrel 9 and inner barrel 1 in the collars !8 and 24 which are frictionally locked to the well casing by the springs 25. Such lifting of the barrel 'I lifts the pin 23 out of the hook member 22 for subsequent rotation to clear the same. A slight rotary movement imparted in the proper direction to the upper tubing section rotates the socket 5 together With the outer barrel 9' thus rotating the inner barrel 'I by frictional engagement between the upper end 9" of the latter with beveled edge 9" to rotate the pin 23 clear of said hook member 22. A slight downward pressure on the upper tube section lowers the socket 5, outer barrel 1, and'sleeve l2, the latter lowering ring l5 against the tension of the spring 2| to spread the slips IS outwardly against the well casing and positively lock the sleeve I2 thereto against movement.

The apparatus is now conditioned for operation to bleed the line as follows. The upper tubing section is rotated substantially a quarter turn in a direction to move the lugs n and H away from the lugs l3', said tubing, as will be understood, rotating socket 5 .and outer barrel 9. At the end of approximately a quarter turn said lugs lll and ll register with the slots l3. At this point the upper tubing, 'socket '5 and outer barrel 9 are lowered, the lugs o and H moving downwardly in said siots !3. This op'- eration, as will be clear lowers the beveled end 9" of the outer barrel S` from engagement with the beveled edge 8' of head 8 of inner barrel 'I thereby establishing communication between the upper tubing section and the slots !3 by way of the space between the socket 5 and the inner' barrel 'I on the one hand, the space between the inner barrel and the outer one on the other hand. Thus the line is bled by way of the siots The manner in which the apparatus is removed will, it is believed, be understood, the operations incident to such removal involving merely reversal of those previously described.

While the foregoing specification sets forth the invention in specific terms, it'is to beunderstood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention what is claimed as new isti 1. A tubing bleeder for insertion into a well casing to bleed well tubing therein comprising an elongated inner barrel having a lower end adapted for the attachment of a lower tubing section thereto and an upper enlarged head having an underbeveled edge providing a shoulder thereon, a sleeve surrounding said barrel in spaced relation thereto intermediate the ends thereof and having a pair of diametrically opposed bleeding siots therein extending inwardly from the upper end thereof for the escape of fluid from the space between said inner barrel and sleeve, a short outer barrel surrounding said inner barrel in spaced relation thereto and having an upper internally beveled end adapted to seat against said shoulder to form a seal preventing such escape of fluid through said siots, said outer barrel being endwise movable into and out of said sleeve to unseat and seat said upper end thereof and rotatable in its seated position relative to said sleeve, said outer barrel having a pair of diametrically opposed lateral bosses on its lower end adapted under rotation of said outer barrel to be registered With said siots for sliding into the same under inward movement of the outer barre] to lock said barrel and sleeve against relative rotation in the inwardly moved positions of said outer barrel, said bosses in the seated position of said outer barrel being movable under rotation of said outer barrel onto'the upper end of said sleeve to lock 'the outer barrel in seated position, and said bosses being engageable with said lugs to limit such rotation of the outer barrel, means for attaching a tubing section to the upper end of said outer barrel in communication with said inner barrel and the space between said barrels, and means on the lower end of the inner barrel to lock the same to the well casing against turning.

2. A tubing bleeder for insertion into a well casing to bleed weil tubing therein comprising an elongated inner barrel having a lower end adapted for the attachment of a lower tubing section thereto and an upper enlarged head having an under-beveled edge providing a shoulder thereon, a sleeve surrounding said barrel in spaced relation thereto intermediate the ends thereof and having a pair of diametrically opposed bleeding slots therein extending inwardly from the upper end thereof for the escape of fluid from the space between said inner barrel and sleeve, a short outer barre] surrounding said inner barrel in spaced relation thereto and having an upper internaliy beveled end adapted to seat against said shoulder to form a seal preventing such escape of fluid through said siots, said outer barrel being endwise moveable into and out of said sleeve to unseat and seat said upper end thereof and rotatable in its seated position relative to said sleeve, said outer barrel having a pair of diametricaliy opposed lateral bosses on its lower end adapted under rotation of said outer barrel to be registered with said siots for sliding into the same under inward movement of the outer barrel to lock said barrel and sleeve against relative rotation in the inwardly moved positions of said outer barrel, said bosses in the seated position of said outer barrel being moveable under rotation of said outer barrel onto the upper end of said sleeve to lock the outer barre] in seated position, and said bosses being engageable with said lugs to limit such rotation of the outer barrel, means for attaching a tubing section to the upper end of said outer barrel in communication With said inner barrel and the space between said barrels, and means on the lower end of the inner barrel to lock the same to the Well casing against turning, said attaching means including a socket telescoping over 'the upper ends of the inner and outer barrels in spaced relation to the former.

WILLIAM H. S'I'IGALL. 

